<template>
<div>
    <div class="box-a"></div>

    </div>
</template>
<script>
export default{};
</script>
<style scoped>
.box-a{
    width: 100px;
    height: 100px;
    background: orange;
  position: relative;
  animation:myframe 5s infinite;
}
@keyframes myframe{
    from{
        top:0px;
    }
    to{
        top:200px;
    }
}
</style>